import Vue from 'vue'
import VueRouter from 'vue-router'

Vue.use(VueRouter)

// 引入所需要的组件
import Login from '../components/Login.vue';
import Home from '../components/Home.vue';
import Welcome from '../components/Welcome.vue';
import Users from '../components/Users.vue';
import Roles from '../components/Roles.vue';
import Rights from '../components/Rights.vue';

import Goods from '../components/Goods.vue';
import Params from '../components/Params.vue';
import Categories from '../components/Categories.vue';
import Orders from '../components/Orders.vue';
import Reports from '../components/Reports.vue';

import Add from '../components/Add.vue';

const router = new VueRouter({
  routes: [{
      path: '/',
      redirect: '/login'
    },
    {
      path: '/login',
      component: Login
    },
    {
      path: '/home',
      component: Home,
      children:[
        {path:"/home",redirect:'/welcome'},
        {path:'/welcome', component:Welcome},
        {path:'/users',component:Users},
        {path:'/roles',component:Roles},
        {path:'/rights',component:Rights},
        {path:'/goods',component:Goods},
        {path:'/goods/add',component:Add},
        {path:'/params',component:Params},
        {path:'/categories',component:Categories},
        {path:'/orders',component:Orders},
        {path:'/reports',component:Reports},
      ]
    }
  ]
});

// 挂载路由导航守卫
router.beforeEach((to, from, next) => {
  // to.path 将要访问的路径, from 代表从哪个路径跳转而来
  // next 是一个给函数,表示可以放行
  // next() 表示放行,  next('/login') 表示强制跳转
  if (to.path === '/login') return next();
  // 获取token值
  const tokenStr = window.sessionStorage.getItem('token');
  if (!tokenStr) return next('/login');
  next();
})

export default router